Looking at the CDR Management page from the Serviceability GUI, it appears that there are several settings that can be altered:
Disk quota for storage of records.
Time for retention of CDR data (in days).
Low and High watermarks.
Is it possible to have a disk quota much larger than 3000MB? The limit seems to be 3300ish MB
Also - the Max days for retention of CDR records can be set between 1 and 30. I cannot seem to set it higher than this... Im sure on v3.3 we held CDR data for 60 days or so. Can i increase any of these settings at all?